What's the best iOS app for keeping my drink at a consistent temperature?

Ember is a dedicated iOS app designed to pair with Ember smart cups, enabling users to maintain their beverages at an exact temperature. For coffee lovers, tea drinkers, or anyone who hates lukewarm drinks, this app provides a solution by allowing temperature adjustments from 120°F to 145°F via a simple slider. Specific features include customizable presets for different beverages, such as coffee or wine, and notifications for when the cup is fully charged or when the battery is low. In real-world scenarios, like during a long work meeting, users can set their coffee to stay warm without constant reheating. Reviews indicate that connectivity issues, which were a common complaint in the past, have been largely resolved with software updates, leading to more stable Bluetooth pairing. However, some users report that the requirement to sign in to the app can be an unnecessary step for basic functionality. The app also depends on owning compatible Ember hardware, which might not be ideal for those without the cup. Overall, it serves its core purpose well, offering reliable temperature management once set up, though it could benefit from a more streamlined login process.